Closure for jars or the like.



V M. C. SUHWEINERT & H. P. KRAFT. ULOSURE FOR JARS OR THE LIKE.

APPLIUATION FILED APR. 6, 1907.

' 902,259. v Patented Oct. 27, 1908.

\1 u x4 l3 INVEN 0R5: HM

WITNESSES: I @W.

UNITED STATES PATENT OFFICE.

MAXIMILLIAN CHARLES SOHWEINERT, OF WEST HOBOKEN, NEW JERSEY, AND HENRYP.

KRAFT, OF NEW YORK, N. Y.

CLOSURE FOR ABS OR'THE LIKE.

Specification oi'Lettera Patent.

Patented Oct. 27, 1908.

Application-filed April 6,-19'07. .Serial 210.3%,687.

boken, in the county of Hudson and State of I New Jersey, and HENRYP.KRAFT, residing in the borough of Brooklyn, county of Kings, city andState of New York, both citizens of the United States, have jointlyinvented certain new and useful improvements in Closures for Jars or theLike, of which the following is a'specifica'tion.

Tins invention relates to closures for jars or the like, and aims toprovide certain improvements therein.

The -invention is particularly directed to a sheet-metal stopper or capfor jars in: the like, whicln while being of extremely strong anddurable construction, will p'ern'iit the utmost economy of manufacture.

In the drawings, wherein we have illustratcd several embodiments of ourinvention,-l "igure l is a central vertical section of a stopperconstructed in accordance with our invention. Fig. 2 is a.-viewoftheparts detached before the assembling operation. Fig. 3 is a bottomView of the stopper. Fig. lillustrates a central vertical section ofanother formof our invention.

Referring to Figs. 1 to 3 of the drawings, wherein we have shown ourinvention as applied to a stopper, let A indicate' the stopper 'as awhole, which preferably constructed with a body portion a, and a topplate I) fixed thereto in any suitable manner, as by having its edgebent over a flange -formed on the top of the body portion as shown.,The.

body a is adapted to screw in a socket B having a seat C formed at itsbottom. The stopper A is provided with a packing disk or washer Ddesigned to be pressed against the seat as the stopper is screwed home.

Our invention is best applied to construetions wherein the stopper andsocket are formed of sheet-metal. Diificulty has heretofore been'metwith in providing proper means for supporting the washer upon thestopper. It is very desirable that the washer should be applied to thestopper instead of to the socket member, so that the washer may beremoved with the stopper and easily inspected or replaced. It isnecessary to provide a-very secure means for attaching the washer to thestopper, since the washer tends to adhere firmly to the socket memberwhen the stopper is unscrewed. It is also'very desirable that thestopper should be ilnperforate sothat noleakage of air or liquid ispossible throughit,

According to our invention We provide a very strong and extended supportfor the washer on its underside, and attain certain other advantageswhich wlll'be hereinafter referred to.

In the process'of constructing a stopper according to the preferred formof our invention, we first shape the body portion into the form shown inFig. 2, in which form it is provided on its inner side with a-circularprojecting portion F which is adapted to lie within the central recessin the washer D and an annular bearing face J surrounding the portion F.An annular plate G having an angular flange Id at its inner edge is thenapplied to the body E so that such flange surrounds the portion F. WVhenin this position the bottom wall I of the projection F is forced in by aproper tool which has the effect of laterally spreading the walls of theprojection so that they firmly engage the flange -H of the plate G. Thetop'plate 7) is then applied to'the body a and its edge bent. over theflange of the latter. The Washer D is then sprung intoplace.

This process permits the use ofa mandrel f or die Within the body a tosupport the latter in spreading or upsetting the walls of the projectingportion F. By constructing the stopper in this manner the entire stoppermay be nickel-plated or otherwise finished before the application of theWasher.

However, the latter maybe applied before the application of the plate G.If desired the washer may be formed with a bead .which is held in arecess (1 formed on the inner side of the plate G, thus providing astill more secure engagement ofthe parts.

When the stopper is completed the washer is held securely againstlateral movement by the part F, and is clamped between the face J of thebody E, and the upper face of plate edge of the washer as is feasiblewithout overlapping the necessary seating face of when the stopperisscrewed home is hence avoided.

In Fig. 4 we have illustrated. our inven tionas applied'to a cap adaptedto screw vover- "the part B which corresponds to the socket member inFig. 1. In this case the cap which is indicated at A carries the washerD its inner side which in this case is near its upper end, such washerbeing arranged on the interior shown. Otherwise the construction doesnot differ materially from that already described.

It will be understood that while we have illustrated, severalembodiments of our invention, we do not wish to be limited to thedetails of construction shown. For instance, the use of the plate Gr,while very desirable, is not strictly essential, and it is also withinthe invention. to attach the plate G to the portion F by other meansthan up: setting the latter. Other variations of a like nature may bealso employed. It will also be understood that our invention isapplicable to other devices than jar closures,

such, for instance, as water-bottle stoppers, syringe nozzles, ice-bagstoppers, can closures, etc, all of which, and others of a like nature,are intended to be covered by the word stopper. as used herein.

What we claim is e l. A stopper having a sheet metal inner side bent toform an integral hollow proj ccting portion of materially smallerdiameter than the body of the stopper, a packing washer surrounding suchprojecting portion, and having a seating face on its under side, andmeans for holding said washer in place, such means being fixed againstaxial movement and engaging a part of the under surface of said washer,and being free from engagement with said seating face.

2. A stopper having an exteriorly screw threaded body portion, and abottom at the lower end thereof, such bottom being formed of the cap aswith an integral hollow projecting portion of materially smallerdiameter than the body of the stopper, and around such portion with anannular flat wall adapted to form a bearing face for a washer, apackingwasher surrounding such projecting portion and bearing against saidface, said washer having a seating face on its under side, and means forholding said washer in place.

3. The combination with a vessel having a seat of a stopper therefor,said stopper havinga sheet metal inner side formed with an integralhollow sheet metal projection, and an annular packing washer,surrounding such projection and having a seating face on its under sideabove said seat, and a portion radially inward of said face, and meansfor holding said washerin place, said means extending beneath saidwasher inwardly of said seating face.

4. A stopper formed with a portion, a washer surrounding sue portion,such portion being formed with a part extendin laterally outward, and anlate engaged by such'part and extending over said washer.

5. A stopper formed with a pxrojecting portion, a washer surrounding sucportion, such portion being formed with a part extending laterallyoutward, an'da plate engaged by such part and extending over saidwasher, said plate having a flange fitting between the two.

6. A stopper having a plate on its inner side, said stopper beingprovided with. means for securing said plate on the inner side of thestopper body, and a washer between such plate and side, and surroundingsaid means.

7. A stopper having a plate secured to the bottom thereof, said platehaving an angu la'r flange, and an annular Washer between such plate andbottom and surrounding said flange.

rojecting In witness whereof, we have hereunto signed our names in thepresence of two subscribing witnesses.

illAlilMILl'iIAN CllARLEg SCHWEINERT. HENRY P. KRAFT.

\Vitnesses EUonN a V. MYERS, Tnnononn T. SHELL.

